Leica 50/2 APO-Summicron-M ASPH: Concentric Flare Rings Plausible Explanation
I previously noted the flare propensity of the Leica 50mm f/2 APO-Summicron-M ASPH.
Now I have found and photographed a more than plausible explanation for the three red concentric rings from the Leica 50mm f/2 APO-Summicron-M ASPH, as seen in the example below.